This is a crowd beta release.
The full app will be released on 14th of April 2023.
You can download this for testing till then

PostMyAd is a DIY app-based platform for programmatic digital
out-of-home advertising, enabling self-management of ads & ad
campaigns from anywhere. Businesses of all sizes can now
independently plan & launch ad campaigns on digital billboards in
minutes.
PostMyAd harnesses the power of AI to make you see what works,
what doesn’t & what’s next as audience reactions are measured
in real time, allowing you to swiftly optimize your campaign
without losing time & money.
Are you ready for the next level of billboard advertising?